Means for preventing condensation in steam-cylinders



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ATTORNEYS,

Patented Jan. 15, 1884..

O; W. CRAWFORD- (No Model.)

MEANS FOR PREVENTING GONDENSATION IN STEAM CYLINDERS. No. 292,104.

WITNESSES:

UNTTED STATES PATENT OTFIQE...

CHARLES WV. CRAWFORD, OF BRAZIL, INDIANA.

MEANS FOR PREVENTING CONDENSATION lN STEAM-CYLINDERS.

SPECIFICATION formingpart of Letters Patent No. 292,104, dated January 15, 1884.

Application filed April 4, 1883. No model.)

To aZZ whom, it may concern.-

Be'it known thatI, CHARLES W. CRAW- FORD, of Brazil, in the county of Clay and State of Indiana, have invented a new and Improved Means for Preventing Condensation in SteaniOylinders, of which the following is a full, clear, and exact description.

The obj ect of my invention is to prevent condensation of steam in engine-cylinders, and also to superheat the steam.

The invention consists in the application of a current of hot air to jacketed cylinders, a blower being used to maintain circulation of the air from a heater to the cylinder and back, as hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is asectional elevation of aheater, steam-cylinder, and blower, with circulationpipes designed to carry out the invention. Fig. 2 is a transverse section on line 3 g of Fig. 3, and Fig. 3 is a longitudinal section of the steam-cylinder on line 2 z of Fig. 1.

A is a stove or heater. B is a blower, and C an engine-cylinder. The heater, as shown, is constructed exclusively for the purpose of heating the air, and has a heating-chamber, a, above a fire-pot, 1). Within the chamber a are concentric cylinders c 0, having space between them closed at the ends, so as to form an airchamber, the inner chamber serving as the escape-flue for the products of combustion. D D are pipes connected to the air-chamber in the stove and passing to the steam-cylinder G, where they connect to the jacketed space, one pipe, D, being also connected to the blower B. The cylinder 0 is formed with a jacket, 6, its whole length, and the heads are to be hollow, to connect with the j acketed space by suitable openings. Preferably the space around the cylinder is divided by a partition, g, and the pipes D, connected at the ends, so as to secure a circulation around the ends and over the whole length of the cylinder.

In operation the blower will draw the air from one end of the cylinder and force it through the air-chamber of the heater and through the pipe to the other end of the cylinder, thus keeping up a circulation of air, which is heated by its passage through the stove. The air being heated to a temperature greater than the steam in the cylinder, condensation is prevented and the steam superk heated.

The heater may be of any suitable construction, and in place of a special heater a coil of pipe may be placed in the boiler-furnace and connected to the blower. I do not limit myself in these respects, nor to arrangement in any respect exactly as shown.

Having thus described my invention, I claim as new and desire to secure by Letters Patent The heater A, having the heating-chamber a between concentric cylinders c 0 around a central smokeflue, in combination with pipes D D, blower B, and cylinder 0, having jacket 6, whereby the air will be drawn from the cylinder, forced through the heater, and back to the cylinder continuously, as and for the purpose specified.

CHARLES "W. CRAWFORD.

Witnesses:

ELIAS S. HOLLIDAY, C. A. lVIATZINGER. 

